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NCT Number: NCT07373496

Patient Position Monitoring System for Beam Gated Radiation Therapy of Malignancies of the Chest and Upper Abdomen

This study will evaluate the feasibility of using this novel patient position monitoring system for patients receiving radiation therapy to targets involving the chest or upper abdomen, as these are the most affected by respiratory motion. This motion monitoring system will be incorporated with standard of care on-board CT imaging to confirm that the respiratory position is tracking the tumor target appropriately.

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Key information

Conditions

Radiotherapy Neoplasms Radiotherapy, Image-Guided

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Washington University School of Medicine

St Louis, Missouri, 63110, United States

Location status: Recruiting

Location contact

Pamela Samson, MD, MPHS

CONTACT

[email protected]

314-801-3806

Pamela Samson, MD, MPHS

PRINCIPAL_INVESTIGATOR

Taeho Kim, PhD

SUB_INVESTIGATOR

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Eligibility Criteria

  • Planning to receive a course of radiation therapy that, per the treating radiation oncologist, requires motion management at the time of CT simulation and during treatment. Types of treatments that require motion management during radiation therapy include treatments to the lung, heart, breast, and upper abdomen (pancreas, liver, adrenals). These may include either free-breathing treatments or breath-hold treatments.
  • At least 18 years of age.
  • No documented allergy to medical grade adhesives.
  • Able to understand and willing to sign an IRB approved written informed consent document.

Treatment and study plan

Patient Position Monitoring System

Device

The device is a motion management system for patients receiving radiation therapy. The system is composed of a disposable fiber optic sensor pad, a signal transceiver, and software to receive and display patient data. The sensor pad is applied to the patient's chest or abdomen and plugged into the signal transceiver, which provides the system's software to provide a visual respiratory trace for the treatment team.

Other names: EmpNia eMotus

Primary outcomes

  1. Feasibility of eMotus system as defined by frequency of successfully delivered treatment fraction

    Time frame: Enrollment to completion of radiation therapy (estimated total time is 1 month)

    The feasibility of the eMotus fiber optic motion sensor system will be measured as the frequency of scheduled treatment fractions delivered successfully using eMotus. Success is defined as delivery of a treatment fraction in one on-table attempt without requiring the use of a secondary (backup) motion management system. Unsuccessful delivery of a treatment fraction will be defined as more than one attempt for gating without reproducible positioning, breath-hold, or surface guidance feedback such that the treatment could not be delivered with eMotus. Descriptive statistics will be collected and reported to determine the proportion of successful motion monitoring events.

Study contacts

Contact information is provided by the study sponsor or research team.

Pamela Samson, MD, MPHS

CONTACT

[email protected]

314-801-3806

Sponsors and collaborators

Lead sponsor

Washington University School of Medicine

Other

Collaborators

  • EmpNia

Registry information

Official study title

Pilot Study of a Novel Patient Position Monitoring System for Beam Gated Radiation Therapy of Malignancies of the Chest and Upper Abdomen

Important dates

Study start
2026
Primary completion
2027
Study completion
2027
First posted
Jan 28, 2026
Registry last updated
May 22, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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